[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now


ZyWall 5 VPN only connects 1 users???

Posted on 2007-03-18
Medium Priority
Last Modified: 2012-05-05
I have a ZyWall 5 firewall and I am having problems connecting remote users to the VPN I configured.  The ZyWall supports up to 10 connections but every time a remote user connects it kicks off whoever was already logged in?  There are 5 users I would like to have connected and they are connecting from dynamic locations changing all the time to the one main office.  Any help would be great.

Question by:cgriffith4
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
LVL 77

Expert Comment

by:Rob Williams
ID: 18745869
Are the remote users connecting from the same site?
If so, this is only possible if your Zywall supports NAT-T. If they are connecting from different sites, it is a different issue.

Author Comment

ID: 18749020
The users will be connecting from different sites all the time which makes this a difficult problem.  Any suggestions?
LVL 77

Expert Comment

by:Rob Williams
ID: 18749043
They will be or they are ? If when testing you are doing so from the same site it will almost certainly only allow one connection. However, using multiple sites, with 1 user per site shouldn't be a problem. The issue is each user needs to have a different public IP, unless NAT-T (Network Address Translation - Traversal) is supported and enabled.
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Author Comment

ID: 18749507
Sorry.  To be more clear the users are connecting from different locations all the time.  There are 5 users connecting from laptops from different hospitals simultaneously throughout the day.  The current setup works great for 1 user at a time.  As soon as a user connects someone else is bumped off only allowing 1 concurrent connection.  I am having trouble allowing multiple concurrent VPN connections.

LVL 77

Accepted Solution

Rob Williams earned 1500 total points
ID: 18759648
I am not familiar with the Zywall units so I had a look at the on-line manuals and a few things to consider:
-each user must have a different local subnet. i.e user 1 might use locally something like 192.168.10.x, user 2 192.168.20.x and so on. If they use the same subnet you can have problems
-for the mobile clients are you using aggressive or main negotiation mode ? Try aggressive , if not using it
-are you making use of the "local user database" on the Zywall ? If so each connection should likely use a different user name if connecting simultaneously
-are there any other routers at the Zywall site, between it and the modem ? If so it could be limiting 1 connection. The modem , especially if a combined modem and router unit might also be doing so, but I have never seen issues with simple modems.
LVL 77

Expert Comment

by:Rob Williams
ID: 18773144
Thanks cgriffith4.
Cheers !

Featured Post

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the absence of a fully-fledged GPO Management product like AGPM, the script in this article will provide you with a simple way to watch the domain (or a select OU) for GPOs changes and automatically take backups when policies are added, removed o…
In this modest contribution, I want to share with the IT community (especially system administrators, IT Support Engineers and IT Help Desks) about Windows crashes/hangs and how to deal with these particular problems.
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question